Toshiba V Series - Page 216

196 Ethernet module User’s Manual
Chapter 8 Error Handling
8
(b) Send request
Start
End
Open the UDP ports on the local and
remote nodes.
Is the USEND_T instruction
completed ?
No
No
Yes
Yes
1) Check the slave station IP address
and message transmission UDP
port number again.
2) Configure the router if there is a
router on the transmission line.
3) Check the network verification
items.
Are the UDP ports on the local
and remote nodes opened ?
No
Yes
Verify the remote station IP address.
Is the transmission
destination IP correct ?
No
Yes
No
Yes
Does a response come
back if a PING is issued
to the slave station
EN311 ?
No
Yes
Is the error counter read out
from the RAS information
constant ?
RAS error counters: Alignment error
Short packet, CRC error
Confirm the status when the
USEND_T or URCV_T is not
completed.
Is the error counter read out from the
RAS information constant ?
Is the station status such that
run + socket transmission is
enabled ?
Set the station to run + socket
transmission enabled using an
operating mode control request.
Yes
Does the status indicate a
normal completion ?
Refer to the completion status and
eliminate the cause of the error.
No